PURPOSE: To control an automatic operating device provided with a pressure oil supplying device for pressure oil supplying and discharging devices on the shaft side so as to profile the stop position of this pressure oil supplying and discharging device even if there is an error in this stop position by supporting a first case on a second case with a spherical bearing and energizing means in such a manner that its posture is changeable.

CONSTITUTION: Spindles 1, 2 stop at prescribed positions and stop within an error range of an angle α in the case of uncoupling of the pressure shaft coupling. The axial centers of the spindles 1, 2 may deviate in an angle α direction in some cases. A hydraulic cylinder 104 first shortens to disengage a stopper 105. The hydraulic cylinder 100 extends and a second square case 92 descends along a slide guide 98. Profiling parts 88, 89 come into contact with pins 86, 98 and the first square case 91 turns and oscillates around a point A by overcoming the energizing force of a pressing member 95 and absorbs the stop errors of the angle α and the angle θ and, therefore, the axial center of the pressure oil supplying device 60 is aligned to the pressure oil supplying and discharging devices 11, 12.